"As Boeing and Airbus pressure engine manufacturers to shorten design time frames on new turbofan designs, major brands like Rolls-Royce, GE and Pratt & Whitney have all pushed out subpar engines, resulting in airlines having ground some of their aircraft to deal with premature repairs and design flaws."

Intricate, complex... words barely adequate to describe modern turbine engines. Plus, some things just can not be properly modeled/anticipated. As AS&WT commented, "nine countries can make a nuclear bomb, only two (US and Britain) can make single crystal turbine blades' (paraphrased)

It's the same engine on a bit bigger scale. They discovered the shortcomings with it during testing and delivery. Swiss, Air Baltic and Bombardier have replaced numerous engines on them in the early phases, with same issues the big 1's are having. If the part breaks, figure out why and repair it. P&W was suppose to have this figured out.

Sorry to offend you. But yes, WHY. Why should airframes so similar in size and weight need an entirely different engine? Thrust is thrust. And efficient engine should work on an A321 if it works on a 737, shouldn’t it? If you’re not too offended, please educate me, Mr GE ,PW, RR or Saran.

Simple yes ? You rush production, you get crap.I guess that the engine manufactories are so afraid of loosing contracts that they no longer have the balls to say "We can't do that in the prescribed time". Then produce a quality product first and then sell it.

And the 787. What a disaster. This engine apparently was never stress tested it they would have found the flaws. Some sales manager decided that since the technology worked on a smaller version it'd be fine on the big one.

it's not quite so simple. While it's true that engine orders are outpacing production, the real issue is that demand for ever more efficient engines has pushed turbine technology and manufacturing processes into areas of 'the unknown', uncharted territory. There simply is no precedence and only time in operation will the insights of experience unfold.

As mentioned earlier, it isn't the unknown any longer..the CS series has been out 4 yrs now including test flights, yet the same issues are croping up. If it's broken, don't smear honey all over it and consider it fixed.

BS A manufacture of any product whose failure can cost lives should not sell their product on a "lets see how well this works"trial.If Boeing sold airplanes in this manner then very few people would be flying. SAFTY BEFORE SALES